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- Helium is a monatomic chemically inert gas. 它是单原子惰性气体。
- Helium is a monatomic gas. 氦是单原子气体
- Gaseous helium is inert, colorless, odorless, non corrosive, and nonflammable. Helium is the lightest rare gas. Helium is a monatomic chemically inert gas. It will not react with other elements or compounds under ordinary conditions. 气态氦极不活泼,无色,无嗅,无腐蚀性,不可燃。氦是最轻的稀有气体。它是单原子惰性气体。一般情况下不同其它元素或化合物反应。
- Helium is a gas used in balloons. 氦是一种用于气球的气体。
- Helium is a noble gas. 氦气是钝气。
- Helium is used to pressurize fuel tanks in rockets because it is still a gas at the low temperatures where the hydrogen fuel is a liquid. 氦气非常轻,是充气气球的理想气源。氢气更轻一些,但氦气作为替代气体却更安全,因为它是不可燃的。
- Ammonia is a colorless gas with strong smell. 氨是无色并有强烈气味的气体。
- There is a vein of melancholy in his character. 他的性格中有少许忧郁的气质。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- I am well aware that this is a tough job. 我深知这是一件棘手的工作。
- It is a fact of life and you must face it. 这是严酷的现实,你必须面对它。
- He is a great guy, a chip off the old block. 他是一位好人,就像他父亲一样。
- That lucky guy is a choice pickup for the girls. 那位幸运的男孩是女孩子们想把上的人。
- That old man is a fount of wisdom. 那个老人有无穷的智慧。
- It would not make sense to inject that much power into one point of the grid, and liquid helium is a cumbersome coolant. 在电力网的某个点,输入那麽大的电力没什麽意义,液态氦这种冷却剂也不容易处理。
- The bank is a ten minutes' run from the hotel. 从旅馆到银行跑步需十分钟。
- Abstract: Superfluid helium is a unique cryogenic fluid,whose flowrate measurement is different from others. 摘 要: 超流氦是一种性质特殊的低温流体,其流量测量与一般流体有所不同。
- Superfluid helium is a unique cryogenic fluid,whose flowrate measurement is different from others. 超流氦是一种性质特殊的低温流体,其流量测量与一般流体有所不同。
- There is a gas station twenty miles away. 二十英里之外有一个加油站。
- And change to pump helium. Helium is a thermogenic agent and can thaw those ice balls. 就改输氦气,氦气是一种致热原,它能把这个冰冻的冰球给融解